Method of soldering



J. MOREAU METHOD OF SOLDERING. I I APPLICATION -F|LED APR. 15, 1921.

Patented Aug. 15, 1922.

2 SHEETS-SHEET I.

J. MOREAU METHOD OF SOLDERING. APPLICATION FILED APR. 15, 1921.

Patented Aug. 15, 1922.

2 SHEETS-SHEET 2.

UNITED STATES PATENTVKOFFVICB;

'JosEPE Home, orcmcaeo, ILLINoIs, ASSIGNOR TO PERRY N. NELSON, or

cnreaeo, ILLINOIS.

- i mnrnon or sonnnnme.

To all whom it may concern:

Be i known that I J osnI-H Monnen, a citizen ofthe United tates, residing at Chicago, in the county of Cook and 'State of Illinois, have invented certain new and use-.

ful Improvements in Methods of Soldering,

spread over a much] reater area than is necessary for the actua solderlng operat1on.,

This often makes it necessary to remove settings to prevent damage thereto and the greatest care must be exercised and various expedients are often resorted to in an efi'ort to protect settings and enamel work. When the article is ornamented with fretwork the danger of damage thereto by the use of an ordinary to-rcli is so great that most ewelers are reluctant to attempt repairing. I

The object oi my invention is to provide an improved method for use by any jeweler for soldering and which can beused to solder part thereof.

any article of jewelry-without damage to any A further and more particular object of the invention is to enable a jeweler to repair by soldering articles of jewelry which contain settings, enamel work or areornamented with tretwork and delicate engraving without necemitati'ng any special treatment and with assurance that no damage will result from the operation.

The invention also aims to provide a method for universal use in soldering gold,

silver, platinum and any other metal used in ewelry and using for thepurpose solder of the same karat as the articleitself.

enable the operator to perform his work Specification of Letters Patent. Patented" Aug. 15, 1922.- Application filed April 15, 1921. Serial 80. 461,672.

ratus for practicing my invention,and referring thereto Fig. 1 is a perspective view of one ty e practicing my invention. M

Figs. '2, 3 and 4; show various forms of carbon electrodes.

Fig. 5 shows one form of the copper electrode. i 6o Fi 6 is a sectional view on the line 6- 6 of Fig. 1 illustrating the fuse block.

' Fig. 7 is an end View of thebench showing the transformer and adjustment switches. Fig. 8 is a sectional view showing the knee '65 of jewelers bench equipped with means or "switch.

Fig. 9 is a sectional view of the transformer. Fig. 10 is a diagrannnatical view of the circuit. 3

Figure 11 is a .detailed vieyvillustrating the use of the apparatus in carrying out my method for soldering the joint of afinger ring.

'a bench 11 of any suitable shape; and size which is ,preferably provided at one end with a cabinet 12 to house the transformer 13 and su port the adjustment switches 14-142.

he transformer is more particularly d enumber 11 D01 C. wire on each leg and a quickly and without danger. of'being burned by unnecessa spreading of the heat; and a still further 0 ject of the invention is to provide" an even, concentrated heat under persfeet control ofthe operator to insure an even flow of the solder.

In the accom anyin 'drawin s I have secondary windin 17 of one layer and 5 turns of 100,000 clrcular mi'lleonductor D. G. C. on each leg. The taps 3, Q, and l or the primary winding on one leg are connected to corresponding-points on one switch, as it, and so the tape 3, 2, and 1 of the primary winding I on the other leg are connected to correspond- And a further objectof the invention is to.

ing points on the other switch as 14. and these switches are connected by a wire 18 to complete the circuit between selected layers of the prima electrode 20. The'clamping membersll) of .fi pmre. preferabl made of. copper and shown a selec emb iment io an An adjust ble clamp 19 of any suitable formis preferably mounted in fixed position on the bench and is adapted to hold a'carbon are connected electrical y with a copper stem In the drawings, there has been shown 75 21 which projects down through the bench and is connected by a wire 22 with the secondary lead 23 on the transformer. A. wire 52 i is connected to the secondary lead 25 and to a binding post 526 on the bench and a flexible wire 27 is also connected to this binding post and carries at its outer end a copper electrode which may be in any suitable form such as the tweezers 28 or the point 29.

The carbon electrode may also be in any suitable form and T have shown several dit @l'erent forms in the drawings any one of which will be suitable for certain work. It may be desirable to provide a round surface or a fiat surface or an edge to concentrate the heat at the particular spot where the joint is to be made and to more conveniently reach places diliicult of access.

The input leads .30 are connected in cir cuit from the fuse box 81 through the lrnee switch 32 to leads 33 and 3% on the transformer. The spring pressed button 32' of the knee switch projects through the cabinet 12 of the bench in a convenient position for. operation by the operator to close the primary circuit. The apparatus is designed to be connected by a flexible extension cord to any convenient lighting outlet. The input on the transformer is designed to work under its heaviest load on 650 wattsflreeping within the underwriters allowance for this on ordinary electric light circuits.

My invention provides a simple method whereby a jeweler can solder articles of jew elry without injury thereto and especially without damaging settings, enamel or fret work. This is made possible because a very quick heat of suificient intensity is provided directly at the point ct contact which en'- ables the soldering operation to be coinpleted before the heat has travelled far from the point of contact. For example, ret'erencebeing made to Figure 11, a soldered joint can be made in the shank of string i l having a jeweled setting or enamel work by grasping the top of the ring in one hand, de-

positing suliicient solder on the ring wherethe joint is to be made and engaging the ring at that point with the carbon electrode 20 and then completing the circuit by engagin the other electrode 29 with the ring ad acent to the solder. Suficient heat will be quickly produced at the point of contact to flow the solder and complete the'operation before the heat has travelled through the ring to the setting and hence the rin can be conyeniently held in the fingers and without injuring the setting or heating the top of the ring to the point of damage. Be-

cause a suilicient heat canfbe produced at the point of contact only and the soldering operation completed very quickly it is possible with my invention. to do soldering work on articles of jewelry without injury thereto andwfithout the necessity of such precautionary measures as have been customary heretofore. Tt will be understood that the degree of heat can be regulated by adjusting the switches 14 and i l and l prefor to use the transformer herein described and more particularly set forth in my companion application for providing a proper current of comparatively low voltage and high amperage at the point of contact, for l have tound this transformer to be particnlarly well suited for the purpose, but in the broad aspect oat my invention any other means for accomplishing the same or equiva lent results may be employed instead of this transformer.

ll prefer to use a high resistance carbon tor the electrode 20 because it will instantly prodoes an incandescent heat at the point oi contact with a conductor of low resistance. The heat is controlled by the adjustment switches so that a propendegree oil heat will be provided for different classes or": worlr.

l have found by practical use oat the invention that it enables comparatively inexperienced persons to do soldering worlr on articles of jewelry which has heretofore only been possible to persons highly slrilled in the use of a blow torch, and. that this worlr can be quickly done at a great saving in time and.

material and that it will enable jewelers to do much soldering worlr which they have heretofore been unable to do.

I claim: r

l: The herein described method of uniting the ends of a work-piece to form a continuous element, which consists in depositing solder on the work-piece where joint is to be made, engaging the work-piece at that point'with a high resistance'electrode,

and completing the circuit by engaging a low resistance electrode with tne work-piece adjacent the solder, whereby heating of the work-piece is localized at the joint.

2. The herein described method cl nni't ing the ends or a work piece to form a continuous element which consists inbridging thejoint of the worlr-piece W lllllSOlClGl, ap-

plying an electrode of high resistance and small contact area to the work-piece at-the ion J joint applying an electrode of low resist.

ance and large contactt area to the workpiece adjacent to the joint, and passing an electric current from one electrode to the other whereby heating of the work-piece is localized at the joint. I

I 3. "The herein described method or: uniting the ends of a work-pieceto form a corn tinuous element, which consists in holding the worl-r-piece between its ends, bridging the joint of the woi-lr-piege w1th solder,- ap: plying an electrode of high resistance and small contact area toxthe work-plece at the joint, applying a contact of low resistance and large contact area to the Work-piece adjacent to the joint, and passing an electric,

current from one electrode to the other whereby heating of the work-piece is localized at the joint.

e. The herein described method of soldering a oint in a finger ring, bracelet or analogous article of jewelry which consists in supporting the article opposite to the joint, bridging the joint with solder, applying an electrode of high resistance to the article at the joint, applying an electrode of low resist- 10 ance to the article adjacent to the joint, and passing an electric current from one electrode to the other, whereby heating of the article is localized at the joint.

JOSEPH MOREAU. 

